2022 Medibank Data Breach Representative Complaint

Join a class action Home Class actions Join a class action 2022 Medibank Data Breach Representative Complaint Medibank Data Breach Representative Complaint Maurice Blackburn has made a representative complaint to the Office of the Australian Information Commissioner (OAIC) against Medibank for a breach of the Privacy Act 1988 (Cth) over a major incident that resulted in a data breach of customer information. The breach involves millions of current and former Medibank, ahm and international student account holders. Update - February 2026 In August 2025, the OAIC sought submissions in relation to the process that the OAIC should undertake to assess harm and finalise this matter. We, on behalf of the representative complainant, provided submissions in response to this request in November 2025. Medibank also provided submissions. The matter now sits with the OAIC to make a decision as to what the next steps will be. We will provide a further update when this becomes available. The complaint alleges Medibank breached privacy laws and failed to adequately protect the personal and health information of its current and former customers. If you would like to receive updates about the progress of the complaint made to the OAIC, and you are a current or former Medibank, ahm or international student customer, you requested a health insurance quote from ahm, and/or Medibank has told you that your information was accessed or published in the data breach, please register. What information has been compromised?